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regulus
Visitor II
March 10, 2009
Question

STR912 UART2 - No RX IRQ after 1 byte (FIFO disabled)

  • March 10, 2009
  • 1 reply
  • 589 views
Posted on March 10, 2009 at 06:57

STR912 UART2 - No RX IRQ after 1 byte (FIFO disabled)

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    regulusAuthor
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 09:58

    Hi Everybody!

    I cannot reach receiver IRQ on UART2 (STR912FAW44 rev.H) after one byte!

    I have configured UART with FIFO disabled. Everything works fine when the received answers are longer than 1 byte. But when answer is one byte long, the STR912 UART2 does not generate RX IRQ.

    I need interrupt after each byte to service STM32 Cortex boot loader protocol, that (unfortunately) gives such (1 byte length) results, ex. 0x79 or 0x1F.

    Earlier i have done receiving in polling (works OK), but now i want to have IRQ.

    Can someone help me ??

    P.S. STR912 Documentation is - like always - completely poor...

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